The other alternative is to use one of the products thats coats the existing rust and turns the rust(iron oxide) into a more benign oxide. It basically turns the rust spot black, and then you can paint over it. This does NOT stop the rust... but slows it progress significantly.
Quote:
Originally posted by spnx
The only way to properly address it is to have it cut out, and fresh metal welded in.
Yearly oil-based rustproofing, ensuring your drainholes are clean, and regular washing will help prevent it from happening again.
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